Heatsink housing



FIG. 1 is a top perspective view of a heatsink housing embodying the design;

FIG. 2 bottom perspective view of a heatsink housing embodying the design;

FIG. 3 is a bottom view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a front view, the back view being a mirror image thereof; and,

FIG. 6 is a right side view, the left side view being a mirror image thereof. 

CLAIM The ornamental design for a heatsink housing, as shown and described. 